Folding-machine.



P. R. GLASS.

FOLDING MACHINE.

APPLICATION FILED om. I2. IsIz.

1 ,270,753. Patented .huw 25, 1918.

4 SHEETS-SHEET 2.

P. R. GLASS.

FOLENG MACHiNE.

APPLlcmoN mw ocr. 12. 19m.

1,270,753. PatentedJmw 25, 1918.

4 SHEETS A-SHEU 3.

P. R. GLASS.

FOLDING MACHINE.

APPLICATION mii) ocr. 12` 15312,

lzltvufml Jum 25, 191B;

i fende @www UNITED STATES PATENT oEE'IoE.

PERLEY B. GLASS, 0F BBOOKLINE, MASSACHUSETTS, ASSIGNOR TO P. R. GLASSO0M- PANT, 0F BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

FOLDING-MACHINE.

Specication of Letters Patent.

Patented June 25, 1918.

Application led October 12, 1912. Serial No. 725,381.

facture it is customary thus to fold theexposed edges of the Finishedshoe so as to prevent exposing a raw edge. In such case the edge to befolded is usually `beveled or skived so that the thickness et the'foldwhen the folding or the turning operation is complete is ,practicallythe same es the thickness of the body of the sheet?` The skived edge iscovered with cement so that, when it is subsequently folded over andpressed, it is permanently secured, in place.

The object4 of the invention is to present a machine for doing thisclass of Work in which the edge is folded or turned a. little at e timeund progressively and in which the fold may lie smoothly at anycurved,portions of said edge.y

The nature of the invention'will appear more fully in the accompanyingdescription und drawings '.tnd will be defined in the appended claims.

The drawings illustrate a. machine to carry into eiect the objects ofthe invention, the said machine embodying the principles thereof andbeing the best means at present known for that purpose. It is to beunderstood, however, that the particular construction illustruted islnerely illustrative of the invention and is notrexheustive.

In the idrawingsx Figui-e1 is a front elevation of the ma.- chine.

Fig. 2 is an isometric view looking down on the central portion of thework plate and showing the instrumentelities for operating on thematerial.

Fig. 3 is .u rear elevation of the parts shown in Fig. 2. I

Fig. 4 is an isometrlc view of the upper portion of the machine framewith the work plate removed and showing a number of theinstrumentalities and connections.

Fig. 5 is un isometric detail of thesupporting guide for the foldingfinger.

Fig. (i is un isometric detail of the folding I finger and its operativeconnections.

Fig. 7 is :in isometric detail of the fold presser and its operativeconnections.

Fig. 8 is an isometric detail teken et right angles to Fig. 7 andshowing only the upper parts shown in said ligure.

Fig. 9 is an isometric detail from underneath the machine showing theknee lever and connections mechanism. i

Fig. 10 is a side elevation partially in cross-section of the feedingmechanism.

Fig. 11 is an isometric detail of the snipper knife and its operativeconnections.

Fig. 12 is :in isometric view of the central portion of the work plateand parts support/ed thereubout showing the stock or material inposition and about to be actedon by the snipper.

Fig. 13 is an isometric detail showing the stock held by thecomplemental pressing members after folding.

Fig. 11i represents e shoe vem i with the inner edge folded :1s by nmachine of this invention.

Fig. 15 represents the rear portion of a. shoe upper with its edgefolded as by a machine of this invention.

to extend to the snipper Fig. 16 is u. detail perspectiveon an enlockedto the base in front by a. nut 5 threaded on a shaft 6 having abell-andsocket connection 7 with the bese and extending between lugs 8projecting from' the said casing 3. This enables the casing to be tippedback exposin the interior parts to view und enabling em to be cleanedendv any adjiistpietyt 'ereof readily to be made..

' y Source of power.

, snipper friction member 14 fastthereon.

terminates on its top with the flat surfaces Y) as shown in Fig. 4 and acircular Work plate shown in Fig. 1 is secured in place on top of theseflat surfaces by screws extending into the threaded holes 11.

The casingf is provided with bearings in which is moutited the mainshaft12 which is provided with a hand wheel 13 and a Suitable pulleys 15and .16 are loosely mounted on said shaft, and when brought into frictional contact with the friction lmember 14 rotate the said The casing 3The alleys are clutched to the friction member y memos of a lever 17fulcrumed at 18 on the base plate 1, and which may be connected to theusual foot treadle not shown, so that upon l'oekiiig .the said lever theclutching operation is effected.

A yielding work support 19 is provided to ald in the support of thestock when required adjacent the folding mechanism.

ce folding mechanism in the preferred form illustrated comprises severalelements which by their cooperative action turn or told the edge of thestock little by little progressively and set the fold. Theseinstrumentalities. omitting for the present the mechanism and theguiding mechanism, which will be considered later, comprise first, meansto define and initiate the 'l old throu hout a small section of theedge,

1 I.and secon means to complete and set the fold.

The-means for defining and fold as herein illustrated c prises a folguide or creaser 20 and a fo ding finger 21 (see Fig. 6), the fold guideholding the stock and defining the line about which the edge is turnedby the folding finger. The means for completing and setting the foldcomprises a pressin block 22 on which the stock rests and the oldpresser 23 which cornpletes the turning of the edge and then clamps thefolded edge Ato the block 22, comleting the fold which is` thereby set,and y an increased pressure subsequently given to said complementalmembers.

initiating the The work support 19 in its normal upper position has itssurface level with the surface of the work plate 10, and is slightlybeveled offjn front and at the left to enable the stock to ride easilyinto lace. The extremity or edge of the fol guide or Vcreaser 20normally stands above the edge 24, and that portion of the stockprojecting beyond or to the right of this edge is folded backon a linedefined by the fold guide. This work support is mounted to yieldvertically to aid in taking care of the passage of stays or thickenedportions through the machine, and it is also given anup and downmovement to bring it into position,

Shaft ,from any suitable.

the top. The forwardly rejecting end 28 of the lever 25 extends t roughto the ex- 76 terior of the frame within reach of the opelator. Theshaft 26 has clamped thereon by means of the split collar 29 a frame 30,the forward portion yill of which'prmects beneath a lug on the lever28and is providedwith a vertically adjustable stop screw 32, while therear ortion 33 of this frame projects beneath a ug on the rear arm ofthe lever 25 and carries a vertical bearing 34 in ed 'a verticallyyielding pin 35. The ShaftI 26 has also clamped thereto a crank arm 36connected by a link 37 with a forward end of a forked arm 38 pivoted ona 'shaft 39 secured in the rear of the casing parallel 90 with the mainshaft 12. This forked arm 38 s ans an eccentric 40 carried by the mainsha. t. The'forked arm 38 is shown as provided with a ib 41 verticallyadjustable by means of t e set screws wear and revent lost motion.

1t will tlius be seen that from the rotation of the-main shaft 12 theeccentric 40 rock- 'mg the forked arm 38 will transmit its mo tion throuh the shaft 26, t e frame and the lever 25, to the work support 19,moving it into upper and lower position at the 4required times. Wheneverit is vdesired to depress the work support by hand the operator raisesthe for 105 e stock passes topl of above and Slig tly back of the edge-24 o the work support, so l e edge that when tht` stock is turned backof the fold guide will fit within the crease 120 and dene the line offold. This fold guide is also mounted to yield to allow the insertion ofthe stock between it and the work support, and to allow the passage ofstays or unusual vertically and in a direction away from the line ofafold. In the construe tion shown this fold guide is curved to the leftto allow for the width of the folded edge, and presents a verticalforward arm of the 80 which is mount- 42, to take up link 3T, the arm36, the 100 vewhenever a' 110 which, as shown at' 20, 115

thicknesses and for this purpose 12:12 i it yields both shank 43 mountedto slide IIO in a head 44 pivotally secured at 45 in a. shortoverhanging 4arm 46 secured to the work plate 10. A set screw 47 passesthrough the overhanging arm 46 and abuts against the lopver end of thehead 44, while a spring pressed pin 48 mounted in a chamhcred upperportion 49 of the arm 46 abuts against the upper end of the head 44. Aspring pressed pin 50 is mounted in a chambex-ed lug 51 forming a partof the head 44 and rests against the top of the curved pol'- tion of thefold guide, thus holding it yieldingly downward. A lever having a fingerpiece 53 is fulcrumed on the pivot 45, and has one end 54 normallyresting on a seat Iin the head 44 and beneath a set screw 55 located ina rectangular projection from the shank 43. The spring pressed pin 50normally holds the fold guide 20 in its lowermost position with thelever 52 in engagement with the end of the set screw 55, so that byadjusting the set screw 55 the limit of the lowermost position of thefold guide may be adjusted.

In order to insert the stock or to allow the passage of a stay or otherunusual thickness, the operator depressesl the lever 52 by pressing onthe linger piece 53, thus first elevating the fold guide 20 against theaction of the spring pressed pin 50 and then rocking the fold guide 20away from the line of fold about thc pivot 45 against the action of thespring pressed pin 48. These spring pressed pins may be adjusted by theset screws shown to give any required amount of pressure, and owing tothe curved shape of the edge ot the fold guide te fold guide itself willlyield automaticall at the re.- quired times and under the particularcon` ditions existing.

The edge of"` the stock is given its initial fold when held in positionby the fold guide by means of the folding finger 21, which is providedwith a rounded edge facing the edge of the guide 20, and is of suchwidth that but a small section of the length of the edge is turned overat onetime.

This folding finger is, in the construction shown, given a movement backand forth close to the edge of the guide 20, and slightly inclined withrespect to the plane of the work plate,` so that in its initial fold theedge is turned back to considerably more than. 9() degrees. A

The folding linger maybe given this movement by the means hereinillustrated. In this form a supporting guide block 56 is secured by setscrews 57 to a projecting por tion 58 of the casing or frame 3. Theshank 59 of the folding finger 21 is mounted to slide in a way o1"recess 60 formed in the face of the guide 56, and so located that as theshank 59 moves therein the folding tinger 21 Will be carried past andclose to. the edgeof the guide 0.0 in an inclined direction. The shank59 is held in place by a plate not shown secured to the guide 56 byscrews not shown entering the holes 61.

Rectilinear movement is imparted to the folding finger by connections toa forked arm 62 pivotally mounted on the shaft 39 and engaging aneccentric 63 of suitable form mounted on the shaft 1'2. Suitabli`connections extend from the arm 62 to the folding finger 21 to allow ofthe required movement takin place and, as shown, comv prise aU-shapelink 64 pivoted at 65 to a lug 66 formed on the shank 59; an H-shapedlink 67 pivoted in turn to the link 64 at its upper end; and a pin 68secured to the upper forward end of the arm 62 and pivoted to the lowerend of the H-shaped link 67. It will thus be seen that upon rotation ofthe shaft 12 the arm 62 will be rocked and through the connectionsdescribed will reci procate the folding finger 21 past and close to theedge of the guide 2() in an inclined direction, thus initiating the foldand turns ing the edge back considerably more than 90 degrees about thefold guide 20.

The next step is to complete and set the fold and to feed the stockforward. In this machine both of these functions are performed by thesame elements. The fold presser 23 moves down completing the turning ofthe fold and clamping the folded edge against the pressing block; thenthese complemontal members gripping thc stock move rearwardly, feedingthe goods along. The clamping action at first is onlyT sufficient tocomplete the fold and hold the stock for feeding. The heavy pressuredoes not come until after the feed has progressed to such an extent asto prevent any stretching of the stock which would take place if heavypressure were given close up to the folding instrumentalties alreadydescribed.

The pressing block is vertically rigid, but the coperating fold presseris under spring pressure which allows it automatically to take care ofany variation in the thickness in the stock and to yield in passing overstays or seams. The pressing block 22 is formed as a part of the slide69 (see Fig. 4) which slides back and forth in the ways 70 formed in thetop of the casing or frame The fold presser ,23 is pivoted at 71 in abearing plate 7 2 secured to the under side of the Slide 69 (as shown inFig. 7), so that it travels back and forth with the slide in unison withthe pressing block. The fold presser is swung about its pivot to moveover, complete the fold and clamp the folded edge upon the pressingblock by suitable means such as hereinillustrated. A lever 73 isfulcrumed on the pivot pin 71 and carries in one arm a screw 74 abuttingagainst the depending shank 75 of the fold presser, while a spring 76connects the said shank to the Said lever arm. The opposite arm of thelever 73 has a. universal connection with a forked erin 77 plvoted onthe shaft 39 and engaging an eccentric 78 of suitable form carried y theshaft 12. The universal connections referred to comprise as hereinillustrated e. swivel link 79 pivoted at its upper end to a block 80ivoted on the lever 73 Aand at its lower en to a pin 81 secured in andrejectingl from the arm 77. It will thus e seen t at when the shaft 12is operated the arm 7 7 will be rocked and through the connectionsdescribed will rock the fold presser on its pivot causing it to completethe fold and c amp it against the pressing block, the spring 7 6allowing the fold presser to yield suicientl to take care of seams,stays or varying t icknesses of stock. The eccentric 78 isso shaped thatafter the fold presser and pressing block are clamped and begin to feedbackwardly, increased pressure is applied, setting and securing the foldwithout danger of stretching the stock.

The feed of the stock secured by movement of the slide 69 upon 'whichthe pressing block and the fold presser are both mounted. When the foldnoperation takes place this slide is in its orward position with thepressing block close to the work support. and thereafter it is movedrearwardly to an adjustable and required extent by suitable mechanismwhich may be ad justed while the machine is in oeration, thus allowingthe feed to be varie by the operator as required. In going around curvesthe feed 1s lessened according to the degree of curvature, while onstraight portions it is lengthened to increase the ra idity of theoperation. The limits of the i'eed may also be adjustebly fixed so thatas the feed is being varied during the operation of the machine it willnot pass outside of these limits.

A suitable mechanism for this purpose is illustrated. It comprises aforked arm 82 (see Fig. 10) pivoted on the shaft 39 and engagin a cam 83of suitable shape carriedy by the s aft 12. v

A bell crank lever 84 is fulcrumed at 85 to the casing or frame 3. Onearm of the bell crank lever 84 carries a stud 86 on which is journaled ablock 87 sliding vertically between depending projections 88 of a plate89 adjustably secured by the set screw 90 longitudinally of the slide69.

The other arm of the bell crank lever 84 is connected by a link 91 tothe arm 82. This connection at the lower end of the link 91 is anadjustable one, the arm 82 havin a. curvilinear slot 92 for thatpurose', 1n which rides a stud 93 projecting rom the lower end of thelink. Smitablev means are rovided for adjusting the stud 93 longituinall of the s ot 92 to secure the results alrea y pointed out.

For the above purpose a bell critnk lever is fulcrl ed at 94 and has aforked arm 95 roj tin upwardly and engaging the stu 93, whi e its otherarm 96 rojects out through a slot97-at the front oi) the casing orframe. The up fer and lower movement of the arm 96 is a justably limitedby pins 98 inserted in holes in the flange 99 at the front of thecasing.

It is desirable to adjust the length of the feed during the operation ofthe machine as already explained, and for that purpose mechanism isrovided by which the bell crank lever 9 -96 ma be shifted by a treadleconnection 100. his connection 100 is secured to a lever 101 fulcrumedat 102 to the base plate and engaging at its forwurd end the arm 96 ofthe bell crank lever. It is desirable that this connection shall bedetachable in order that the casing 3 may be readily swung back on itspivots 4. For that purpose a sleeve 103 is mounted on the arm 96 and hasa lug 104 projecting beneath the lever 101. A s ring 105 normallyprojects the lug 104 eneath the lever 101, but allows the sleeve to bedrawn outwardly releasing the lever when desired. It will thus be seenthat the feed slide 69 may by the adjusting Screw 90 be set at thedesired position longitudinally and then that upon the operation of theshaft 12 the slide 69 will be given a backward and forward reciprocationby means of the mechanism described; that b means of the pins 98 theforward and bac ward limit of this movement may be lined as desired; andthat by means of the treadle connection 100 this feeding movement may bevaried at will while the machine is in operation.

Suitable means are provided for guiding the stock into position betweenthe folding instrumentalities, and for that purpose there is hereinprovided a fixed gage 106 (see Fig. 2) and a co erating yielding pressergage 107. The xed ga e 106 is ongitudinally adjustably secured y meansof the set screw 108 in the work, plate 10. The yielding resser ga e 107is formed on the end of a ever 109 ulcrumed at 110 on the U-shapedprojection 111 from the side of the overhanging arm 46 above the workplate 10. A leaf spring 112 secured to the projection 111 rests upon thelever 109 and yieldingly holds the presser gage 107 downwardly, itsdownward movement being limited by contact with the shoulder 113 on thefixed gage (as shown in Fig. 12). :The exterior of the fixed gage iscurved from the shoulder 113 downwardly to the base, and the undersurface of the yieldin preer ga e is correspondingly curved an also curvupwardly. When the yielding lgage .rests upon the shoulder the stock ispushed u over this curve until'its edge contacts wit the yielding gage,thus present ing the stock partially curved and gaging ivan a fixed theamount to be folded. Variations in the width of the fold thus gaged aresecured b substituting fixed gage members 106 of di ferent dimensions."The ielding presser gage yields or is moved by the operator when stays,seams or other obstructions come along.

lVhen the edge is being turned or folded about a curve, especially about:i concaved curve. it is necessary to slit or snip that portion of theedge folded over, and for that purpose the machine is provided withsnipping means which are thrown into action preferably by the knee ofthe operator `whenever necessary.

The snipping mechanism, as herein shown, comprises a movable snipperknife 114 and coperating. blade which is here formed at the back of thefixed gage 106, so that as thesnipper knife 114 moves against and pastthe back of the gage 106 it snips or shears through the edge of thestock. The movement of the snippcr knife is secured by suitablemechanism from the main shaft 12. In the construction illustrated thesnipper knife '1l-1 is adjustably mounted by the set screw 115 in asnippet' arm 116 swinging in the slot 117 of the guide 56 and fulcrumedon the pin 118.l It projects up through the slot in the projection 111of the overhanging arm. An arm 119 projects to the left from and isconnected with the arm 116 and carries at its end a ball head 120, sothat when this arm 120 is rocked up and down the snipper knife will beswung back and forth against the back of the gage 106. A spring pressedpin 121 adjustably secured by the set screw 122 in the top flange of thecasing presses against the arm 119, and an adjustable screw 123 carriedby an upward projection from the arm 116 engages the casing of thespring pressed pin 121 to limit the movement of the snipper knife. Aframe 121 is mounted to slide vertically in the casing 3 and isapertured at its upper end to allow the-arm 119 to pass therethrough.The frame carries a sleeve 125 sliding in the upper flange of the casing3 and this sleeve contains a vertically 4adjustable pin 120 adapted toengage the top of the hall 120. Another pin 127 slides looselyvertically in the frame 124 and when in its uppermost position engagesthe bottom of the ball 120. A cam slide 128 is mounted to slidehorizontally in Ways in the frame 124 and is cam shaped on its uppersurface to engage a stud 129 projecting from the pin 127. The frame 124is provided at its lower end with horizontal projections 130 betweenwhich an eccentric 131 secured ,to the main shaft 12 operates. It willthus be seen that when the slide 128 is pulled to the rc'ar it Willengage the stud 123. raise the pin. 127 into Contact with the ball' 120,so thatthe ball will be held between the pin 127 and the pin 126, andthen upon the rotation of the main shaft the frame 124 Will be given avertical reciprocation rocking the snippet knife.

The slide 128 is moved back and forth as required to secure theoperation or cessation of operations of the snipper knife by connectionswith a knee lever 132 (see Fig. 9). In the construction shown this kneelever 132 is fulcrumed on the pin 133 011 a plate 134 which may besecured to the bottom of the work table. Screw pins 135 limit themovement of the lever. A link 136 extends from the knee lever to theshorter arm of a bell crank lever 137, the longer arm of which is inturn connected by. a vertical link 138 with one arm of a bell cranklever 139 (see Fig. 1), the upper arm of which is pivoted at 140 to therear end of the slide 128. A

spring 141 extending from the shorter arm of the bell crank lever 137 toa pin on the base plate 134. tends to maintain the parts in suchposition as to maintain the shipper knife out of operative connectionwith the driving shaft, so that movement of the knee lever 132 isnecessary to throw it into operative connection. V

The snipper knife is held closely up against the back of the gage bymeans of a Vhardened block 1412K (shown in Fig. 2) adjustably secured inthe ov'erhanging arm 46 and by means of the longitudinal adjustment ofthe gage 106.

he general operation of the machine will be apparent. from the foregoingdescription. It will be seen that in the construction illustrated theoperator with one foot controls the clutch for stopping and starting themachine, with the other foot controls the length of the feed, and withhis knee throws into and out of operation the snippet' knife. The partsp1' jecting above the work plate are small. @he overhanging arm 46 is ofsmall cross-section and the work may pass fri-ely beneath the projection111, so that Vamps and other parts having a small opening may readily bemanipulated to have the edge inturned.

When the edge is folded around an inside or concave curve. asillustrated in Fig. 14, it is dcsirablc'and usually necessary to snipthe folded edge producing the effect shown in the figure referred to.

The operation of folding an edge about a, convex 'or outside curvo.particularly when this curve is sharp, is an extremely difficult one.Such work is customarily performed by hand. the operator plaiting theedge into small folds. An important fcav'ture of this invention is thatit enables this classof work to he done rapidly and ctt cicntly bymachine. This class of work is illustrated in lfig. 15 which showslheheel portion of an upper with the edge folded guide or creaser 20, andat the same time the fold presser 23 rises, releasing the work frombetween the fold presser 23 andthe pressing block 22, but leaving theedge cemented down. Thus the work is free to turn about the edge or toeof the fold; guide or creaser 20, thus enabling the edge to be turned ona very sharp convex or outside curve. With the work thus held clampedbetween the yielding work support 19 and the fold guide or creaser 20,and the folded edge cemented down to the body of the work, at a distancerearwardly equal to the length of feed, the folding finger 21 moves upon an incline in the plane of and across the toe or edge of the foldguide or' creaser 20 and turns the edge of the work thereover, forming apucker or buckle in this edge between where it is cemented down y to thebod of the work and where itis held between tfie fold guide or creaser2() and the folding finger 21, the yielding work support 19 having beendepressed during the upward movement of the folding finger 21. Duringthis turning of the edge by the folding finger 21 the fold presser 23and pressing block 22 have moved forward close up to the folding finger21, andthe fold presser has started on its downward or clampingmovement, and while the work l is held between the fold guide or creaser20 and the folding finger 21, the fold presser 23 comes down directlyover the pocker formed in the edge and presses it down upon the pressingblock 22, so that the pucker lies f'n a plait over toward the previouslyfolded portion of the edge. While the fold presser 23 is 'coming downthus to clamp the edge the foldin finger 21 begins to be retracted. Whent e fold presser 23 has clamped the puckered edge against the pressmgblock 22 and the folding fin er 21 is retracted clear of the fold gui eor creaser 20 so as to release vthe work the feed takes i 'plac'eb themovement of the fold resser 23 'an pressing block 22 rearward y and' theoperation proceeds y' as be-`v` fore. l

The machinefof the present application in some ofitsaspects is animprovement'upon the machine of my Patent No. 1,224,529; and ,certainfeatures, which are shown and described in the present application, areclaimed in the atent. i

Having fully escribed my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A machine of the character described the edge of apiece of material,a pressing! block and a fold presser between which the' fold iscompleted, means for bodily moving the pressin block and fold presser tofeed the materia and means for increasing the pressure of the foldpresser upon the pressing block during the feeding movement. 3L, Amachine of the character described comprising a work table, a fold guideor creaser mounted above the work table with its edge-in the line offeed of the material, a folding finger supported beneath the `work tableand recprocable across the edge of the fold ide in a direction inclinedto said edge, an means for reciprocating said folding linger to turn theedge more than ninet degrees about the fold'guide. i

4. A machine of the character described comprising a work'table and foldguide or creaser supported above the work table, a folding fingercoperating with the fold guide or creaser to initiate the fold, mountedand operated from beneath the work table, means for completing andsetting chey fold4 mounted and operated from beneath the work table, andmeans for snipping the edge prior to folding mounted and operated frombeneath the work table.

5. A machine for pro ssively folding the margin of a iece of s eetmaterial having presaing mecx anism and folding mechanism in combinationwith a gage having a curved face, a pivoted presser'located above saidgage and a spring for holding said presser and gage in contact.

6. A machine of the character described comprising a folding guide orcreaser, a

"folding 'finger andv means for'moving the folding finger across theedge of thejold ide and 1n the vertical plane thereo'ffto initiatethefold, andmeans for supporting the creaser above the material to allowthe creaserto ield vertically and laterally and maintain t 'e same widthof-fold in crossing seams and other obstructionsff 1. A machine of thecharacter described comprising a work table, asu'pporting arm"projecting therefrom; a yfold 'guide-'or c'reaser mounted'on saidsupporting arm toy `yield vertically and laterally, a foldih finger andmeans for moving the folding nger across the ed e of the fold guide toinitiate the fold, a fixe gage having a curved face to guide the edge ofthe material to the fold guide and folding finger,and a yieldinglymounted presser gage coperating with said fixed gage and having its faceconforming to the face of the fixed gage.

8. A machine of the character described comprising a fixed gage, acoperating yieldingly mounted presser gage, dig/adjacent l faces of saidgages conforming and coperatin to guide and turn the edge ofV themateria a Work support mounted to yield vertically, a fold guide orcreuser supported above the work support and mounted to yield verticallyand laterally, a folding finger, and means for movin the folding fingeracross the edge of the fold guide to turn the 9. A machine of thecharacter described comprising a fixed gage, a coperating yieldinglymounted presser gage, the ad]acent faces of said gages conforming andcoperating to guide and turn the edge of the material, a Work supportmounted to yield vertically, a fold guide or creaser supported above thework support and mounted to yield vertically and laterally, a foldingfinger, and means for movin the folding finger across the edge of theold guide to turn the edge of the material, a pressing block, alnid ayielding fold presser coperating with md pressing block to complete andset the 10. A machine of the character described comprising a fixedgage, a coperating yieldingly mounted presser gage, the ad]accnt facesof said gages conforming and coperating to guide and turn the edge ofthe rnaterial, a work support mounted to yield vertically, a fold guideor creaser supported above the work support and mounted to yieldvertically and laterally, a folding iinger, and means for moving thefolding lin ger across the edge of the fold guide to turn the edge ofthe material, a pressing block, a yielding fold presser coperating withsaid pressing Ablock to complete and set the fold, and means for bodilymoving the pressing block and fold presser to feed the material.

'11. A machine of the character described comprising a fixed gage, acoperating yieldingly mounted presser gage, the adjacent faces of saidgages conforming and coperating to guide and turn the edge of the ma!terial, a work support4 mounted to yield vertically, a fold guide orcreuser supported above the work support and mounted to yield verticallyand laterally, a. folding finger, and means for moving the folding'finger across the edge of the fold guide to turn the edge of thematerial, a pressing block, a yielding fold presser coperating with saidpressing block to complete and set thc fold, means for lbodily movingthc pressf' ing block and fold presser to feed the material, and meansfor increasing the pres sure between said pressing block and foldpresser during said feeding movement.

12. A machine of the character described comprising a fold ide orcreaser, a folding linger and means or reciprocating it across the foldguide or creuser to turn the edge of the Work thereover, means forcausin the fold ide or creaser and the folding nger yieldingly to holdthe turned edge, a pressing block and coperating fold presser and meansfor causing the Vsaid ressng block and fold presser to act upon t eturned edge between the point where it is held by the fold guide orcreaser and tbe'folding finger and Where it has been reviously cementeddown upon the body o the work, thus setting a Packer or plait in theedge and permitting the folding of the edge about a com vex or outsidecurve.

13. A machine of the character described comprising a fold guide orcreaser, a folding finger and means for reciprocating it across the foidguide or creaser to turn the edge of the work thereover, means forcausing the fold iide or creaser and the folding finger yieldmgly tohold the turned edge, and means acting upon the turned edge between thepoint where it is held b v the fold guide or creaser and the foldingfinger and where it has been previously cemented down upon the bod ofthe work to complete the turning of t e edge, to seta pucker or plaittherein, and thus permit the folding of the edge about a convex oroutside curve.

14. A machine of the character described comprising a fold guide orcreaser, a folding finger, means for moving the finger rclatively to thecreaser to turn the edge of the work thereover and hold the Work yield in alv, and means acting between the' point obere the work is thus heldand the point whore the edge has been previously cemented doe-n tocomplete the turning of the edge and to press theedge upon the body ofthe wor-lr.`

15, A machine of the character described comprising a Work table, a foldguidil or creaser mounted above the Work table with its edge in the lineof feed of the material, a folding finger supported beneath thc worktable and reciprocable across the' edge of the fold guide in a directioninclined lo said edge, means for reciprocating said folding finger toturn the edge more than ninety degrees about the fold guide, means forfeeding the material and means for varying tbc rate of feed .during theoperation ol the machine.

16. A machine of the character described having, in combination, a Worktable, a folder and a creaser located opposittx each other and both heldfrom movement in the direction of feed of the Work, said folderf; beingsupported beneath the table and we' lid `ereaser mounted above the workta le with its edge in the line of feed of the material, a foldin fingersupported beneath the Work table and reciprocable in a straight linepath across the edge ofthe fold guide and 1n a direction inclined to theplane of said table, and means for reciprocating" said folding finger. i

18. A machine for progressively `folding the margin of a piece of s ing,in combination', a work table, an arm projecting over said table, acreasercarried by sai arm, a presser, a folder and a knife extending uthrough said table, and mechanism .Locate beneath said table foractuating said knife, folder and presser.

19. A machine for progressively folding the margin of apiece of sheetmaterial having, in combination, means for intermittently feeding apiece of material into position to have its margin folded, a creaser fordefining the line of fold, a folder arranged to bend the margin of thematerial about the edge of the ereaser, a presser for completing andpressing the fold, a work support located beneath the creaser,`and meansfor intermittently raising said,work supper-ttoA grip the materialbetween 1t and said creuser.

y20. A4 machine for progressively folding and plaiting the convexlcurved margin of a piece of sheet material having, in combination, meansfor feeding a plete of leather intermittently into position to have itsmargin folded, a member to press upon the leather and thereby determinethe line of fold, a movable folder opposite said member and arran ed tocoperate therewith to initiate the fo d, and a hammer located close-toand beside the folder whereby in a convexly curved margin a pucker isformed by the folder beneath the hammer, -in position to be engaged bysaid hammer when said-hamer is brought down. l 4 Y *21.* A. machine oftheeharacter described having, in combination, a work table, a folderand acreaser. locatedopposite each other and both heldfrom movement inthe direction of feed of the work, said foldei-` bei ng supportedbeneaththe table andreciproca le across the edge ofthe fld. vguide in adirection inclined" thereto, meansfor 17e ciproeating said folder toturn'the edge more `than ninety degrees about the fold guide,- meansforfeeding the-'work, and means for va, ying the rate of feed dlring theoperation o "the machine.

`22. A nnmliiiie of th'class descri ed oomprising a fixed gage having aeur opereet material hav `rial in the form o ative face, said ga e beingprovided with a shoulder, a pivoted presser gage having an operativeyface curved to correspond to the curvature-of said fixed gage, and aspring for holdin saidi presser gage down upon Said ahoul er. .23. Amachine for pro ressively folding and pressing the margin o a piee offlexible material, having, in combination, a support `fl".\l"fl5llematerial, means for forming the fold, combined pressing and feedingmecha nsm se arate `from the folding means, and means or causin saidmechanism rat to press the fold an then to feed4 the material.

24. A machine for progressively folding and pressing the margin of apiene of flea--` ible maten having' m combination, a' etai tional-yereaser, a folder recprocable'inian inclined path to coperate with thecreaser informing the fold, 4a presser for pressing the fold, and meansfor moving the presser in a ,direction transverse to its preamp;miwement to feed the material.

25. n a folding `rmmchine a gaie having an upward] ourved fue@ and a coperating gage exten ing over said first;married'i age whereby the widthof the margin whle l to be folded over on the body of the wirk isdetermined. a

26. A maehne for progressively foldin and planing the oonvexly curvedmargin o flexible material comprising means engaging said flexiblematerial to feed it, astat tionary member shaped to cause the margin ofthe material as 'said material is fed past it to be bent upwardly withthe edge of said material uppermost, a movable liner acting upon themargin so bent to orm an upstanding pucker therein and a presser act ingto swing the bent margin with its upstandin pucker down upon the body ofthe materiali.

27. A machine for progressively folding and plaiting the eonvexly curvedmar 'n of flexible material, comprising eansA or curvinV upwardly themargin of the material with res eet to the body thereof, movable meansor forming a pucker in said upwardly curved margin, said upwardly curvedpuckered margin ,being unsupported and out of contact with the body ofthe material, and means for contacting with said puoker in said upwardlycurved margin and pressing it down upon the body of ythe matea plait. v28. A machin for progressively folding and plaiting thel convexly curvedmargin of apiece of flexible material comprising a stationary memberwith .a curved face or partially curving the margin, a fold presser anda device movable up and down in a path at right angles to the I ineoffold and actingl i to form a pueker in the partially curved margin.

. 29. A. machine of the class described having, in combination, a folderl'or partially forming the fold` mechanism for feeding the stockintermittently past the folder, mecha nism for completing and pressingthe fold, and means for operating said feed and press ing mechanisms,.said means comprising a shaft, a plurality7 of levers` pivoted aboutsaid shaft, an operating shaft,'a plurality of rams on said last namedshaft'` arranged to oseillate said levers, and means for rotating` saidoperatingr shaft.

30. A machine of the Class described having. in combination, a` tabl@for supporting the stock, in aus for ,forming the fold, stock feedingmechanism, pressing mechanism, and meansl for operating said mechanisms,said means including a plurality of parallel shafts located beneath saidtable, one of said shafts being a pivot shaft and the other an operatingshaft, fams on said operating shaft, a plurality of levers supported at`a point near one end on the pivot shaft and at a point spared from saidend by said cams, and means for rotating said operating shaft.

31. A inaehine of the class described, having, in combination, a tablefor supporting a piece of stock, feeding means, a stationary memberarranged to turn up the, margin of the stoek fed past it, a presserarranged to act upon the margin after the action of the stationarymember, and means for operating said feeding means and presser, saidoperating means including two parallel shafts located beneath saidtable, a plurality ofY levers connected with said shafts, means forrotating one of said Shafts, and cams mounted on said rotating shaft andadapted when said shaft is rotated to oseillate said levers about theaxis of the other shaft.

39.. A. machine for progressively folding the margin of a piece offlexible material comprising a stationary member pastr which thematerial is fed to curve upwardly the margin of said material, a knifeto snip said upwardly curved margin, means for vibrating said knife in apath located entirely above the plane of the, body of the material, anda reciprocating presser, said knife being located between said.stationary member and said presser.

33. A machine of the class described, having in combination, means forfeeding a piece of flexible material into position to have its marginoperated upon, a stationary member having` a curved face for bendingupwardly said margin, a knife located in the rear of said member andadapted to snip the bent-up margin, means for vibrating said knife in apath located entirely above the plane of the body of lhe material` and areciprocating presser located in the rear of said snipping knife.

Pil. machine for progressively folding the eonvexly curved marginof apiece of flexible material comprising means engaging said material tofeed it, a stationary member for turning up the margin of the materialinto a position in which the edge is uppermost, a movable member forturning the margin farther in the. same dileetion and at` the same timeforming an upstauding put-ker in the margin` and means actingsubsequently to lay the upstanding pucker upon the body of the materialin the form of a plait.

35. A machine of the classi described having, in combination, a table tosupport` the stock, feed mechanism, snippiug mechanism and pressingmechanism arranged to act upon the stock so supported, an operatingshaft` located beneath said table, cams on said shaft, connections fromsaid cams respectively to said feed mechanism, said Snipping mechanism,and said pressing mechanism, and means for rotating said operatingshaft.

36. A machine for progressively folding the margin of a piece offlexible material, comprising a stationary member past which thematerial is fed to curve upwardly the margin of said material, a knifeto snip the upwardly curved margin, means for vibrating said knife in apath approximately parallel to the plane of the body of the material,and a reciprocating fold presser, said knife being located between saidstationary member and said presser.

37. A machine for progressively folding the margin of a piece offlexible material, comprising a stationary member having an upwardlycarved face past which the. material is fed to curve the margin of thematerial upwardly into an approximately vertical position, a knife,means for `vibrating; said knife to slit said upwardly curved margin,and a reciprocating fold pi esser, said knife being located between saidstationary member and said presser.

In testimony 'whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

PERLEY It. GLASS Witnesses:

ALICE (lr. NixoN, FREDERICK S. GREENLEAF.

